238104991 has 8 divisors (see below), whose sum is σ = 243335664. Its totient is φ = 232901760.

The previous prime is 238104989. The next prime is 238105003. The reversal of 238104991 is 199401832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 238104991 - 2¹ = 238104989 is a prime.

It is a super-2 number, since 2×238104991² = 113387973478220162, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 238104991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238104931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11196 + ... + 24526.

It is an arithmetic number, because the mean of its divisors is an integer number (30416958).

Almost surely, 2^238104991 is an apocalyptic number.

238104991 is a deficient number, since it is larger than the sum of its proper divisors (5230673).

238104991 is a wasteful number, since it uses less digits than its factorization.

238104991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13721.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 238104991 is about 15430.6510232070. The cubic root of 238104991 is about 619.8065568900.

The spelling of 238104991 in words is "two hundred thirty-eight million, one hundred four thousand, nine hundred ninety-one".